lstring.cpp

来自「ldraw_DOS游戏开发包」· C++ 代码 · 共 45 行

#ifndef LSTRING_CPP
#define LSTRING_CPP
#define LD_MAX_LIST_LEN 200

short lArrangeStr(char *source,char *dest);
static char lCheckChar(char c);
static short list[LD_MAX_LIST_LEN][2];

short lArrangeStr(char *source,char *dest)
{ register char *p0,*p1;
  short i,j,count,done=0;
  for (i=0;i<LD_MAX_LIST_LEN;i++) list[i][0]=0,list[i][1]=0;
  p0=source; p1=p0; i=0;
  while (!done) {
    while (*p1==' '&&*p1!=0) p1++; p0=p1;  // Skip space
    if (*p1=='\'') {
       p1++; while(*p1!='\''&&*p1!=0) *p1++;
       if (*p1=='\'') p1++; list[i][0]=p0-source; list[i][1]=p1-p0;
       i++; p0=p1;
    }
    switch (lCheckChar(*p1)) {             // Get form
      case 2: list[i][0]=p1-source; list[i][1]=1;
	      p1++; p0=p1; i++; break;
      case 1: while (lCheckChar(*p1)==1) p1++;
	      list[i][0]=p0-source; list[i][1]=p1-p0;
	      p0=p1; i++; break;
      case 0: done=1; break;
    }
  }
  count=i; p1=dest;
  for (i=0;i<count;i++) {
    for (j=0;j<list[i][1];p1++,j++) *p1=source[list[i][0]+j];
    if (i!=count-1) { *p1=' '; p1++; }
  }
  *p1=0;
  return count;
}
static char lCheckChar(char c)
{ if (c==0) return 0;
  if (c==' ') return 3;
  if ( (c>='a'&&c<='z') || (c>='A'&&c<='Z') ||
       (c>='0'&&c<='9') || (c=='_') ) return 1;
  return 2;
}
#endif